init: HW1

part1/serialOP.cpp

@@ -0,0 +1,61 @@
+// computes the absolute value of all elements in the input array
+// values, stores result in output
+void absSerial(float *values, float *output, int N)
+{
+  for (int i = 0; i < N; i++)
+  {
+    float x = values[i];
+    if (x < 0)
+    {
+      output[i] = -x;
+    }
+    else
+    {
+      output[i] = x;
+    }
+  }
+}
+
+// accepts an array of values and an array of exponents
+//
+// For each element, compute values[i]^exponents[i] and clamp value to
+// 9.999.  Store result in output.
+void clampedExpSerial(float *values, int *exponents, float *output, int N)
+{
+  for (int i = 0; i < N; i++)
+  {
+    float x = values[i];
+    int y = exponents[i];
+    if (y == 0)
+    {
+      output[i] = 1.f;
+    }
+    else
+    {
+      float result = x;
+      int count = y - 1;
+      while (count > 0)
+      {
+        result *= x;
+        count--;
+      }
+      if (result > 9.999999f)
+      {
+        result = 9.999999f;
+      }
+      output[i] = result;
+    }
+  }
+}
+
+// returns the sum of all elements in values
+float arraySumSerial(float *values, int N)
+{
+  float sum = 0;
+  for (int i = 0; i < N; i++)
+  {
+    sum += values[i];
+  }
+
+  return sum;
+}